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	<meta charset="UTF-8">
	<title>Client Side Pagination in TreeGrid - jQuery EasyUI Demo</title>
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<body>
	<h2>Client Side Pagination in TreeGrid</h2>
	<p>This sample shows how to implement client side pagination in TreeGrid.</p>
	<div style="margin:20px 0;"></div>
	<table id="tg" title="Client Side Pagination" style="width:700px;height:250px"
			data-options="
				iconCls: 'icon-ok',
				rownumbers: true,
				animate: true,
				collapsible: true,
				fitColumns: true,
				url: 'treegrid_data2.json',
				method: 'get',
				idField: 'id',
				treeField: 'name',
				pagination: true,
				pageSize: 2,
				pageList: [2,5,10]
			">
		<thead>
			<tr>
				<th data-options="field:'name',width:180">Task Name</th>
				<th data-options="field:'persons',width:60,align:'right'">Persons</th>
				<th data-options="field:'begin',width:80">Begin Date</th>
				<th data-options="field:'end',width:80">End Date</th>
				<th data-options="field:'progress',width:120,formatter:formatProgress">Progress</th>
			</tr>
		</thead>
	</table>
	<script type="text/javascript">
		(function($){
			function pagerFilter(data){
		        if ($.isArray(data)){    // is array  
		            data = {  
		                total: data.length,  
		                rows: data  
		            }  
		        }
		        var dg = $(this);  
				var state = dg.data('treegrid');
		        var opts = dg.treegrid('options');  
		        var pager = dg.treegrid('getPager');  
		        pager.pagination({  
		            onSelectPage:function(pageNum, pageSize){  
		                opts.pageNumber = pageNum;  
		                opts.pageSize = pageSize;  
		                pager.pagination('refresh',{  
		                    pageNumber:pageNum,  
		                    pageSize:pageSize  
		                });  
		                dg.treegrid('loadData',state.originalRows);  
		            }  
		        });  
		        if (!state.originalRows){
		        	state.originalRows = data.rows;
		        }
		        var topRows = [];
		        var childRows = [];
		        $.map(state.originalRows, function(row){
		        	row._parentId ? childRows.push(row) : topRows.push(row);
		        });
		        data.total = topRows.length;
		        var start = (opts.pageNumber-1)*parseInt(opts.pageSize);  
		        var end = start + parseInt(opts.pageSize);  
				data.rows = $.extend(true,[],topRows.slice(start, end).concat(childRows));
				return data;
			}

			var appendMethod = $.fn.treegrid.methods.append;
			var loadDataMethod = $.fn.treegrid.methods.loadData;
			$.extend($.fn.treegrid.methods, {
				clientPaging: function(jq){
					return jq.each(function(){
						var state = $(this).data('treegrid');
						var opts = state.options;
						opts.loadFilter = pagerFilter;
						var onBeforeLoad = opts.onBeforeLoad;
						opts.onBeforeLoad = function(row,param){
							state.originalRows = null;
							onBeforeLoad.call(this, row, param);
						}
						$(this).treegrid('loadData', state.data);
						$(this).treegrid('reload');
					});
				},
				loadData: function(jq, data){
					jq.each(function(){
						$(this).data('treegrid').originalRows = null;
					});
					return loadDataMethod.call($.fn.treegrid.methods, jq, data);
				},
				append: function(jq, param){
					return jq.each(function(){
						var state = $(this).data('treegrid');
						if (state.options.loadFilter == pagerFilter){
							$.map(param.data, function(row){
								row._parentId = row._parentId || param.parent;
								state.originalRows.push(row);
							});
							$(this).treegrid('loadData', state.originalRows);
						} else {
							appendMethod.call($.fn.treegrid.methods, jq, param);
						}
					})
				}
			});

		})(jQuery);

		function formatProgress(value){
	    	if (value){
		    	var s = '<div style="width:100%;border:1px solid #ccc">' +
		    			'<div style="width:' + value + '%;background:#cc0000;color:#fff">' + value + '%' + '</div>'
		    			'</div>';
		    	return s;
	    	} else {
		    	return '';
	    	}
		}
		
		$(function(){
			$('#tg').treegrid().treegrid('clientPaging');
		})
	</script>
</body>
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